China's cultural exchanges with foreign countries follow cen- tralized administration by the Ministry of Culture.On June 27,1997,the Ministry of Culture promul- gated the Regulations on Foreign Cultural and Artist...China's cultural exchanges with foreign countries follow cen- tralized administration by the Ministry of Culture.On June 27,1997,the Ministry of Culture promul- gated the Regulations on Foreign Cultural and Artistic Performances and Exhibi-展开更多
Ganoderma lucidum polysaccharides have protective effects against apoptosis in neurons exposed to ischemia/reperfusion injury, but the mechanisms are unclear. The goal of this study was to investigate the underlying m...Ganoderma lucidum polysaccharides have protective effects against apoptosis in neurons exposed to ischemia/reperfusion injury, but the mechanisms are unclear. The goal of this study was to investigate the underlying mechanisms of the effects of ganoderma lucidum polysaccharides against oxidative stress-induced neuronal apoptosis. Hydrogen peroxide（H_2O_2） was used to induce apoptosis in cultured cerebellar granule cells. In these cells, ganoderma lucidum polysaccharides remarkably suppressed H_2O_2-induced apoptosis, decreased expression of caspase-3, Bax and Bim and increased that of Bcl-2. These findings suggested that ganoderma lucidum polysaccharides regulate expression of apoptosis-associated proteins, inhibit oxidative stress-induced neuronal apoptosis and, therefore, have significant neuroprotective effects.展开更多
Cytological,biochemical and physiological charcteristics of quiescent,high-vigor carrot somatic embryos obtained with the use of regulation culture were studied. As shown in cytological observation, quiescent somatic ...Cytological,biochemical and physiological charcteristics of quiescent,high-vigor carrot somatic embryos obtained with the use of regulation culture were studied. As shown in cytological observation, quiescent somatic embryos obtained by regulation culturing for 70 days displayed small compacted cells with thick wall, dense cytoplasm and large amount of starch granules. Biochemical tests revealed a starch content and a soluble sugar content 1.9 and 1.7 times respectively as much as those of the control embryos(normal culture) while physiological study demonstrated that the respiration was maintained stally at a very low level,only 1/4 that of the control at the end of the 70-day period. These results provide further evidences that regution culture so after the morphology, biochemistcy, physiologr and metabolism of somatic embryos that they became quiescent,highly synchronized, and had their roots ungrown, a sate facilitating safe storage.展开更多
文摘China's cultural exchanges with foreign countries follow cen- tralized administration by the Ministry of Culture.On June 27,1997,the Ministry of Culture promul- gated the Regulations on Foreign Cultural and Artistic Performances and Exhibi-
文摘Ganoderma lucidum polysaccharides have protective effects against apoptosis in neurons exposed to ischemia/reperfusion injury, but the mechanisms are unclear. The goal of this study was to investigate the underlying mechanisms of the effects of ganoderma lucidum polysaccharides against oxidative stress-induced neuronal apoptosis. Hydrogen peroxide（H_2O_2） was used to induce apoptosis in cultured cerebellar granule cells. In these cells, ganoderma lucidum polysaccharides remarkably suppressed H_2O_2-induced apoptosis, decreased expression of caspase-3, Bax and Bim and increased that of Bcl-2. These findings suggested that ganoderma lucidum polysaccharides regulate expression of apoptosis-associated proteins, inhibit oxidative stress-induced neuronal apoptosis and, therefore, have significant neuroprotective effects.
文摘Cytological,biochemical and physiological charcteristics of quiescent,high-vigor carrot somatic embryos obtained with the use of regulation culture were studied. As shown in cytological observation, quiescent somatic embryos obtained by regulation culturing for 70 days displayed small compacted cells with thick wall, dense cytoplasm and large amount of starch granules. Biochemical tests revealed a starch content and a soluble sugar content 1.9 and 1.7 times respectively as much as those of the control embryos(normal culture) while physiological study demonstrated that the respiration was maintained stally at a very low level,only 1/4 that of the control at the end of the 70-day period. These results provide further evidences that regution culture so after the morphology, biochemistcy, physiologr and metabolism of somatic embryos that they became quiescent,highly synchronized, and had their roots ungrown, a sate facilitating safe storage.
